The pop superstar is on a world tour, getting ready for the premiere of a new movie, and media reports claim she’s pregnant with her second child.

She’s keeping mum on the pregnancy report, but while she’s on her Mrs. Carter Show World Tour, Beyonce and her mother, Tina Knowles, have launched a special auction that will allow the lucky bidder and a guest to spend a day backstage with the star on her tour.

The backstage auction, presented in partnership with the global charity auction site Charitybuzz, will allow bidders to vie for backstage experiences in either Los Angeles, New York or third city that will be named later. Successful bidders get the opportunity to be part of the styling team for the world tour and will have the chance to meet Beyonce and pose for photos backstage.

The auction packages also include lunch with Tina Knowles and a personal tour of the wardrobe rooms that house Beyonce’s costumes. At the end of the day, the winner and a guest will get VIP tickets for the evening’s performance plus a gift bag.

Bidding on the Los Angeles backstage auction begins today and runs through June 11 at Charitybuzz.com/MissAMeal.Bidding for the New York experience will begin June 27 and run through July 17.Bidding for the third surprise city will be announced later.

Each auction package is valued at $25,000.

"We look forward to seeing the winners of the auction and showing them tour life, which is a lot of fun,” Tina Knowles said in a release. "They get to have a great time while making a donation and a difference in people’s lives."